Wireless charging receiver integrated battery management system and method

Abstract

Discussed is a battery management apparatus which includes a battery management system that monitors a state of a battery, and a power receiving device that wirelessly receives power from a power transmitting device, where the battery management system calculates an optimum charging condition for the battery based on data on the state of the battery and power transmission performance of the power transmitting device.

The invention claimed is: 
     
       1. A battery system comprising:
 a battery management system that monitors a state of a battery; and 
 a power receiving device that wirelessly receives power from a power transmitting device, 
 wherein the battery management system calculates an optimum charging condition for the battery based on data on the state of the battery and a power transmission performance of the power transmitting device, 
 wherein the power receiving device is integrated into the battery management system, and 
 wherein the battery management system adjusts a duty and a resonance frequency of the power transmitting device when a difference value between the calculated optimum charging condition and a preset reference value is greater than or equal to a threshold value. 
 
     
     
       2. The battery system of  claim 1 ,
 wherein the battery management system wirelessly communicates with the power transmitting device. 
 
     
     
       3. The battery system of  claim 2 ,
 wherein the battery management system wirelessly receives data on a power transmission condition from the power transmitting device. 
 
     
     
       4. The battery system of  claim 3 ,
 wherein the power transmission performance of the power transmitting device includes at least one of real-time power transmission efficiency and maximum available transmission power. 
 
     
     
       5. The battery system of  claim 1 ,
 wherein the data on the state of the battery includes at least one of a maximum available charging current of the battery, a real-time remaining battery capacity, and a remaining battery life. 
 
     
     
       6. The battery system of  claim 1 ,
 wherein the battery management system and the power receiving device are electrically coupled. 
 
     
     
       7. The battery system of  claim 1 ,
 wherein the battery management system measures an input voltage and an input current of the battery and an output voltage and an output current of the power receiving device in real time. 
 
     
     
       8. The battery system of  claim 1 ,
 wherein the battery management system calculates the optimum charging condition according to at least one criterion of wireless charging efficiency, wireless charging speed, and battery life. 
 
     
     
       9. The battery system of  claim 1 ,
 wherein the battery management system controls the power transmission performance of the power transmitting device based on the optimum charging condition. 
 
     
     
       10. The battery system of  claim 1 , wherein the power receiving device and the battery management system are incorporated together into a battery cell module assembly. 
     
     
       11. A power transmitting device comprising:
 a transmission circuit that wirelessly transmits power to a power receiving device; 
 a communication unit that wirelessly transmits data on a power transmission condition to a battery management system and wirelessly receives a power control signal according to an optimum charging condition of a battery calculated from the battery management system; and 
 a controller that adjusts a power transmission condition transmitted to the power receiving device based on a power control signal according to the optimum charging condition, 
 wherein the power receiving device is integrated into the battery management system, and 
 wherein the battery management system adjusts a duty and a resonance frequency of the power transmitting device when a difference value between the calculated optimum charging condition and a preset reference value is greater than or equal to a threshold value. 
 
     
     
       12. A battery management method comprising:
 wirelessly transmitting power for supply to a battery from a power transmitting device to a power receiving device; 
 monitoring a state of the battery; 
 receiving data on a power transmission condition from the power transmitting device; and 
 calculating an optimum charging condition of the battery based on data on the state of the battery and the data on the power transmission condition received from the power transmitting device; and 
 adjusting a duty and a resonance frequency of the power transmitting device when a difference value between the calculated optimum charging condition and a preset reference value is greater than or equal to a threshold value, 
 wherein the power receiving device is integrated into the battery management system. 
 
     
     
       13. The battery management method of  claim 12 , further comprising:
 adjusting the power transmission condition of the power transmitting device based on the optimum charging condition of the battery. 
 
     
     
       14. The battery management method of  claim 12 , wherein the power receiving device and the battery management system are incorporated together into a battery cell module assembly.